Broadband Homodyne Sixport Reflectometer

The paper presents a new concept of the broadband homodyne sixport reflectometer. Homodyne detection with rectangular phase modulation, which is equivalent of DSBSC modulation is used in the measurement system. The mathematical approach of the reflectometer bases on the mathematical analysis of the sixport reflectometer with power meters. Eight real calibration coefficients describe every kind of imperfections of the measurement system. They join output voltages of homodyne detectors with real and imaginary part of a measured reflection coefficient by the linear equations. It affords possibilities for calibrating the measurement system using various calibrating procedures. The principle of operation, the exact mathematical analysis of the sixport homodyne reflectometer, its idea of calibration and measurement results are presented in the paper.